Author/Authors :
Liu، نويسنده , , Y. and O’Brien، نويسنده , , S.C. and Zhang، نويسنده , , Q. and Heath، نويسنده , , J.R. and Tittel، نويسنده , , F.K. and Curl، نويسنده , , R.F. and Kroto، نويسنده , , H.W. and Smalley، نويسنده , , R.E.، نويسنده ,
Abstract :
Cold carbon cluster negative ions are formed by supersonic expansion of a plasma created at the nozzle of a supersonic cluster beam source by an excimer laser pulse. The observed distribution of mass peaks for the C n - ions for n > 40 demonstrates that the evidence previously given for the special stability of neutral C60 and the existence of spheroidal carbon shells cannot be an artifact of the ionization conditions.
